There's a good chance that they're gaining page hits from this controversy and, knowing the founders of Rap Genius (vaguely), I wouldn't be surprised if they capitalize and conjure as much attention as possible here.
On a slightly different note, it doesn't seem right for Google to intervene with specific companies' page rankings. Although Google isn't breaking laws, the "black box" type of generic algorithm seems more ethical. Rather than favoring individual groups/sites/corporations, I think Google should maintain credibility by encompassing all rules, regulations, and penalties within one algorithm. Search engine results shouldn't be subjective.